May weather forecast
Ostrava, Czech Republic

May

Weather in May

May ushers in the beginning of the warm season in Ostrava. Going up to 19°C (66.2°F), the temperature creates a pleasant atmosphere ideal for outdoor activities. Compared to the previous month, more sunlight saturates the city, ripening foliage and boosting natural beauty. While rainfall becomes more frequent, the warmth offset by cool breezes offers one the best weather periods in the city. Servers in local cafés start setting up tables outside as residents enjoy the bright, cheery weather.

Temperature

With the onset of May, Ostrava's weather sees a temperature rise, transitioning from 14°C (57.2°F) in April to a still refreshing 19°C (66.2°F). Ostrava experiences a nighttime temperature average of 8°C (46.4°F) during May.

Rainfall

In Ostrava, in May, it is raining for 15 days, with typically 82mm (3.23") of accumulated precipitation. In Ostrava, during the entire year, the rain falls for 162 days and collects up to 684mm (26.93") of precipitation.

Daylight

In Ostrava, the average length of the day in May is 15h and 25min.
On the first day of the month, sunrise is at 05:22 and sunset at 20:05. On the last day of May, sunrise is at 04:43 and sunset at 20:45 CEST.

Sunshine

The months with the most sunshine are May through August, with an average of 7h of sunshine.

UV index

In Ostrava, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What are the temperatures in May?
In Ostrava, 19°C (66.2°F) is the average high-temperature and 8°C (46.4°F) is the average low-temperature during May.
How many days does it rain in May?
In Ostrava, in May, it is raining for 15 days, with typically 82mm (3.23") of accumulated precipitation.
How many hours of daylight does Ostrava have in May?
In May, the average day length is 15h and 25min.
When is the sunrise / sunset in May?
On the first day of May, sunrise is at 05:22 and sunset at 20:05. On the last day of the month, sunrise is at 04:43 and sunset at 20:45 CEST.
What is the month with the most sunshine?
May through August, with an average of 7h of sunshine, are months with the most sunshine.
How long on average sun shines in May?
In Ostrava, the average sunshine duration in May is 7h.
What is the UV index intensity in May?
In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average UV index
Average temperature in May
Ostrava, Czech Republic
  • Average high temperature in May: 19°C

The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (1°C).

  • Average low temperature in May: 8°C

The months with the highest average low temperature are July and August (12°C).
The coldest month (with the lowest average low temperature) is January (-5°C).

Average rainfall in May
Ostrava, Czech Republic
  • Average rainfall in May: 82mm

The wettest month (with the highest rainfall) is July (90mm).
The driest month (with the least rainfall) is January (32mm).

Average rainfall days in May
Ostrava, Czech Republic
  • Average rainfall days in May: 15 days

The month with the highest number of rainy days is June (16 days).
The months with the least rainy days are February, March, September and October (12 days).

Average daylight in May /
Average sunshine in May
Ostrava, Czech Republic
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in May: 7h

The months with the most sunshine are May, June, July and August (Average sunshine: 7h).
The month with the least sunshine is December (Average sunshine: 1h).

Average UV index in May
Ostrava, Czech Republic
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).

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